18.8
07/31/1984
RPI 719
The letters patent expired on 11/24/1992: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.
Talk to a specialistLatest action published by the INPI: 07/31/1984. We update with every new RPI gazette, published weekly.
Applicants
K. I. (pessoa física)
US
Inventors
E. B. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
07/31/1984
RPI 719
#18.2
04/17/1984
RPI 704
#16.1
09/15/1981
RPI 569
#21.1
11/24/1992
RPI 1147
Same category
Patent monitoring
Receive alerts on INPI events, decisions, and expiry dates for your portfolio.